In the pharmaceutical industry, AHU stands for Air Handling Unit.

An AHU is a critical component of the HVAC (Heating, Ventilation, and Air Conditioning) system, designed to regulate and circulate air in pharmaceutical manufacturing areas, cleanrooms, and laboratories. It ensures controlled temperature, humidity, filtration, and air pressure to maintain clean and contamination-free environments, meeting regulatory standards like GMP (Good Manufacturing Practice) and ISO cleanroom classifications.